In 1996, Dultz won a Primetime Emmy Award in the category Outstanding Individual Achievement in Art Direction for a Variety or Music Program for an episode of Muppets Tonight. In 1997 he received a second nomination in this category for another episode of Muppets Tonight, hosted by Jason Alexander. In 1999, Dultz won an Excellence in Production Design Award in the category Feature Film for his work on the fantasy drama What Dreams May Come.

Dultz started to work as property master in the art department in the late 1970s with credits such as the comedy White House Madness (1975), the sport comedy Revenge of the Cheerleaders (1976), the crime comedy The Great Texas Dynamite Chase (1976), and the science fiction comedy Battle Beyond the Stars (1980, with Eugene P. Rizzardi).

Beside working as assistant art director on the science fiction sequel Back to the Future Part II (1989), the television series Parker Lewis Can't Lose (1990-1993), and the action comedy Last Action Hero (1993), Dultz was the art director on the comedy Take This Job and Shove It (1981), the romance The Last American Virgin (1982), the drama Promised Land (1987), the comedy Overboard (1987), the drama Flatliners (1990), the comedy Soapdish (1991), the fantasy film Tall Tale (1995, with set designer Greg Papalia), the science fiction comedy Tank Girl (1995, starring Lori Petty, Malcolm McDowell, Jeff Kober, and Iggy Pop), the television series Muppets Tonight (1996), and the fantasy drama What Dreams May Come (1998).

His credits as production designer include the action drama Youngblood (1978), the television comedy Konrad (1985), the television series Black Tie Affair (1993), the horror film Wolf (1994), the television series Muppets Tonight (1997-1998), the drama Nailed (2001), the crime drama Beyond the City Limits (2001), the television comedy The Santa Trap (2002), the comedy Team America: World Police (2004), the romance Lucky 13 (2005), the 2006 MTV Movie Awards, and the television comedy Not Another High School Show (2007). In addition, Dultz worked as graphic designer on the romance Waitress (2007, production design by Ramsey Avery and art direction by Jason Baldwin Stewart) and as puppet supervisor on the comedy Forgetting Sarah Marshall (2008).